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https://issues.apache.org/jira/browse/HBASE-2634?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Kyle Purtell closed HBASE-2634.
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> Clean up and document locks in HRegion
> --------------------------------------
>
> Key: HBASE-2634
> URL: https://issues.apache.org/jira/browse/HBASE-2634
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Reporter: Todd Lipcon
> Priority: Major
>
> HRegion now has four different lock objects:
> - splitsAndClosesLock (RWLock)
> - newScannerLock (RWLock)
> - updatesLock (RWLock)
> - splitLock (Object)
> It's not well documented what the purpose of each is, and I imagine we may be
> able to get rid of at least one.
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